Perhaps you should try some spelling variations:
thue tinh » thuy tinh
thu tich » chu tich, chu thich, thuy tinh
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
dat khoa » da khoa, vat khoa, dac khoa
khoa hoc » hoa hoc
hoc dat » hoc dan, hoc dai, hoc phat
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va pham » van pham, va phat, va phap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu tich) or (thue tinh)) hoc tap, nghien cuu dong hoc dat khoa hoc mai hoi va pham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu tich) OR (thue tinh)) hoc tap, nghien cuu dong hoc dat khoa hoc mai hoi va pham van.
• Adding a wildcard symbol may retrieve word variants: ((thu tich) or (thue tinh)) hoc tap, nghien cuu dong hoc dat khoa hoc mai hoi va pham van*.